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I would rather be an optimist and be wrong than a pessimist who proves
to be right. The former sometimes wins, but never the latter.
-- "Hoots"

If I tell you I'm good, you would probably think I'm boasting. If I tell
you I'm no good, you know I'm lying.
-- Bruce Lee

Functional programming is like describing your problem to a
mathematician. Imperative programming is like giving instructions to
an idiot.
-- arcus, #scheme on Freenode

You think you know when you learn, are more sure when you can write,
even more when you can teach, but certain when you can program.
-- Alan J. Perlis (Epigrams in programming)

Before software can be reusable it first has to be usable.
-- Ralph Johnson

Only bad designers blame their failings on the users.
-- unknown

Vigorous writing is concise. A sentence should contain no unnecessary
words, a paragraph no unnecessary sentences, for the same reason that a
drawing should have no unnecessary lines and a machine no unnecessary
parts. This requires not that the writer make all sentences short or
avoid all detail and treat subjects only in outline, but that every word
tell.
-- William Strunk, Jr. (The Elements of Style)